carbon cycling – mycolab.ai

Editorial: Effects of microplastics on soil ecosystems

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Tiny plastic particles called microplastics are accumulating in soil worldwide and causing problems for the microorganisms that keep soil healthy. This editorial reviews research showing that while newer biodegradable plastic mulches used in farming are better than traditional plastics, both types can weaken the complex networks of beneficial soil microbes. Scientists found bacteria that can break down some plastic chemicals, but long-term solutions require better monitoring and ways to manage plastic residues in agricultural soils.

ThIPK1 regulates lignocellulolytic enzyme expression during wood degradation in white-rot fungi

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White-rot fungi are nature’s recyclers, breaking down dead wood and playing a vital role in forest ecosystems. Researchers discovered that a protein called ThIPK1 acts like a molecular switch that detects chemicals in wood (lignin monomers) and turns on the genes that produce wood-destroying enzymes. This happens through a sophisticated signaling system and changes in how DNA is packaged, allowing the fungus to adapt and efficiently degrade wood.

Towards understanding the impact of mycorrhizal fungal environments on the functioning of terrestrial ecosystems

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Mycorrhizal fungi form partnerships with plant roots and profoundly influence soil health and carbon storage. Different types of these fungi (arbuscular, ectomycorrhizal, and ericoid) work differently and create distinct soil environments with varying impacts on nutrient availability and carbon cycling. Researchers have now developed a unified framework and an experimental system to better understand and measure these effects, which could improve our ability to manage soils and predict ecosystem responses to environmental changes.

Contrasting stability of fungal and bacterial communities during long-term decomposition of fungal necromass in Arctic tundra

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Scientists studied how dead fungal material breaks down in Arctic soil over three years. They found that melanized fungi, especially Pseudogymnoascus, are key decomposers that help break down tough fungal material containing melanin. While bacterial diversity increased over time, the fungal community remained relatively stable. Even after three years, about 20% of the fungal material remained undecomposed, suggesting it can help store carbon in Arctic soils.

Plasticity of symbiotroph-saprotroph lifestyles of Piloderma croceum associated with Quercus robur L.

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A fungus called Piloderma croceum can switch between two lifestyles: breaking down dead wood to get nutrients, and forming beneficial partnerships with living oak tree roots. This research shows that dead wood colonized by this fungus acts like a ‘bank’ of fungal spores that can later establish symbiotic relationships with new trees. This process helps forests thrive by improving how trees obtain nutrients from soil. Understanding this dual lifestyle reveals how deadwood plays an important role in forest health beyond just decomposition.

The Functional Role of Fungi and Bacteria in Sulfur Cycling During Kelp (Ecklonia Radiata) Degradation: Unconventional Use of PiCrust2

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When kelp washes up on beaches, microscopic fungi and bacteria work together to break it down and recycle its nutrients back into the ocean. This study shows that fungi play a much bigger role in this process than previously thought, especially in cycling sulfur compounds that affect climate. By understanding these microbial partnerships, scientists can better predict how coastal ecosystems respond to changes in seaweed production.

The influence of mycorrhizal hyphal connections and neighbouring plants on Plantago lanceolata physiology and nutrient uptake

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Fungi that live in soil form partnerships with plant roots and can extend underground networks connecting multiple plants. In this study, plants with access to expanded fungal networks captured more carbon through photosynthesis, accumulated more nutrients like phosphorus and zinc, and released more carbon into the soil. However, whether neighboring plants were present or what type they were did not significantly change these benefits, suggesting that soil exploration volume matters more than plant-to-plant connections through fungal networks.

Warming and Reduced Rainfall Alter Fungal Necromass Decomposition Rates and Associated Microbial Community Composition and Functioning at a Temperate–Boreal Forest Ecotone

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Scientists studied how climate change affects the breakdown of dead fungal material in forest soils. They found that warmer temperatures and less rainfall initially speed up decomposition in the first two weeks, but then slow it down later. The microbial communities eating the dead fungi also changed over time, with different bacteria and fungi becoming dominant depending on soil moisture and temperature conditions.

Research Topic: carbon cycling